– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 am Fri 28 Aug Local TimeUpdates in: hr min sUpdate imminent
Issued: 4 am Fri 28 Aug Local Time
Updates in:
Update imminent hr min s
Issued: 4 am Fri 28 Aug Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryLight rain (total 9mm), mostly falling on Fri night. Very mild (max 18°C on Fri afternoon, min 10°C on Sat morning). Wind will be generally light. | Days 4–6 Weather SummaryHeavy rain (total 31mm), heaviest during Tue night. Very mild (max 19°C on Mon afternoon, min 8°C on Wed night). Wind will be generally light. | |||||||||||||||||
Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  | |  | | | |  |  | |  |  | |  | | | | |
rain shwrs | rain shwrs | light rain | rain shwrs | light rain | light rain | light rain | light rain | rain shwrs | clear | clear | clear | cloudy | rain shwrs | heavy rain | light rain | rain shwrs | rain shwrs | |
Cloud base (m) | 650 | 1950 | 600 | 700 | 600 | 700 | 600 | 750 | 4350 | 2900 | 1950 | 2100 | 550 | 550 | 550 | 1800 | ||
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | 0.3 | 0.3 | 4 | 1.4 | 3 | 0.2 | 0.6 | 0.3 | 0.1 | — | — | — | — | 0.1 | 21 | 4 | 4 | 1.9 |
max °C | 14 | 18 | 13 | 11 | 12 | 12 | 11 | 13 | 12 | 17 | 19 | 15 | 16 | 18 | 13 | 11 | 11 | 11 |
min °C | 13 | 17 | 11 | 10 | 11 | 11 | 11 | 12 | 11 | 13 | 19 | 12 | 13 | 17 | 10 | 10 | 11 | 8 |
chill °C | 13 | 17 | 11 | 10 | 11 | 11 | 11 | 12 | 11 | 13 | 19 | 12 | 13 | 17 | 8 | 9 | 10 | 8 |
Freezing level m | 2800 | 2850 | 2500 | 2250 | 2300 | 2400 | 2750 | 2900 | 3400 | 3300 | 3300 | 3050 | 3200 | 2800 | 2650 | 2250 | 2200 | 2050 |
 | 6:18 | — | — | 6:20 | — | — | 6:20 | — | — | 6:22 | — | — | 6:24 | — | — | 6:24 | — | — |
 | — | 7:58 | — | — | 7:55 | — | — | 7:53 | — | — | 7:52 | — | — | 7:50 | — | — | 7:47 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Light rain (total 9mm), mostly falling on Fri night. Very mild (max 18°C on Fri afternoon, min 10°C on Sat morning). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Heavy rain (total 31mm), heaviest during Tue night. Very mild (max 19°C on Mon afternoon, min 8°C on Wed night). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. To see the weather forecasts for the other elevations, use the tab navigation above the table. For a wider overview of the weather, consult the Weather Map of Washington.
| Weather Station | Temp. | Weather | Wind | Gusts | Cloud / Visibility |
|---|---|---|---|---|---|
 | |||||
Bellingham Airport |  | ||||
* NOTE: not all weather observatories update at the same frequency which is the reason why some locations may show data from stations that are further away than known closer ones.